Blood rules

the long version

"After the vampire named Gabriel came into her world, Mariah Lyander was forced to face her true nature and admit to the terrible things she had done--things that Gabriel could not forgive. To redeem herself and recover her own humanity--and Gabriel's love--Mariah sets out on a perilous journey across the haunted land, in search of a rumored cure. And Gabriel, blood-bonded to her, is compelled to follow. Together--yet not together--they will face danger and death. And what they will find is not a place where monsters can be cured--but one where they are born...."--P. [4] of cover.